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Major Breach Study Reveals Widespread Leaks of Bank Statements, SSNs, and Crypto Keys

29.07.2025
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A new study has revealed the extent of sensitive information leaked through ransomware attacks and data breaches, including key financial documents and crypto keys.

Key Takeaways:

  • Unstructured files like financial documents and crypto keys are being widely exposed in breaches.
  • Cryptographic keys were found in 18% of incidents, posing serious security risks.
  • Cybercriminals are mining breached data like data scientists, targeting high-value information.

The report, published by cybersecurity firm Lab 1, analyzed over 141 million records from 1,297 breach incidents.

Unlike most breach assessments that focus on structured data like usernames and passwords, Lab 1’s analysis targeted unstructured files, the type often overlooked but potentially more damaging.

Hidden Dangers: Financial Docs, Crypto Keys, and Emails Exposed

The breaches include financial documents, cryptographic keys, email archives, and internal business records.

According to Lab 1 CEO Robin Brattel, the goal was to expose the risks hidden in everyday files that rarely draw attention.

“We focused on the huge risks associated with unstructured files that often hold high-value information, such as cryptographic keys, customer account data, or sensitive commercial contracts,” he said.

The findings are alarming. Financial documents appeared in 93% of the breach incidents studied, accounting for 41% of all analyzed files.

Nearly half included bank statements, and over a third contained International Bank Account Numbers.

In 82% of the cases, customer or corporate personally identifiable information (PII) was exposed, much of it originating from customer service interactions.

A staggering 51% of incidents included emails containing U.S. Social Security numbers.

Perhaps most concerning was the discovery of cryptographic keys in 18% of the breaches.

The Tea App leak is so crazy.
The geolocation feature could endanger the users.
How do you even plug such vulnerable app on the store.
The torrent magnet:?xt=urn:btih:brl45s3ysyotj6ljolmtnrlvfmyv4y7s&dn=tea&xl=59368985613&fc=57794
Geolocation meta datahttps://t.co/ExS7Nhl5YV pic.twitter.com/wzj7VcqExG

— W6 – The Cult of Startups (@cybsmith_flynn) July 26, 2025

These keys can be used to bypass authentication systems, giving attackers a powerful advantage in future cyber intrusions. Source code and internal scripts were also widely leaked, appearing in 17% of the analyzed data sets.

The study underscores a shift in cybercriminal tactics. Hackers are increasingly operating like data scientists, mining stolen data for high-value assets to use in fraud, identity theft, or ransomware follow-ups.

“With cybercriminals now behaving like data scientists to unearth these valuable insights to fuel cyberattacks and fraud, unstructured data cannot be ignored,” Brattel warned.

16 Billion Logins Leaked: New Mega Breach Puts Crypto Users at Risk

Last month, a massive data breach exposed more than 16 billion login credentials from platforms like Apple, Google, Facebook, Telegram, and GitHub, according to cybersecurity researchers at Cybernews.

The breach, among the largest ever recorded, is not a single leak but a combination of datasets gathered through infostealer malware, credential stuffing attacks, and undisclosed breaches tracked since early 2024. Some individual sets held as many as 3.5 billion entries.

Researchers warned the leaked credentials—many recently harvested—pose a severe threat to users, especially those in crypto, due to the inclusion of sensitive login details, cookies, and tokens.

The structure of the data suggests it was harvested by modern malware, making it far more dangerous than older, recycled leaks.

One dataset tied to Telegram included 60 million records, while another, allegedly linked to Russia, had over 455 million.

Much of the data was found in unsecured Elasticsearch databases and object storage systems, briefly exposed but long enough to be copied.

Although the exact source remains unclear, cybersecurity experts suspect criminal actors compiled the records.

With such a vast trove of credentials, attackers now have tools for phishing, ransomware, and unauthorized access to crypto wallets, especially for users lacking multi-factor authentication.

The post Major Breach Study Reveals Widespread Leaks of Bank Statements, SSNs, and Crypto Keys appeared first on Cryptonews.

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Disclaimer: Information found on CryptoMediaClub is those of writers quoted. It does not represent the opinions of CryptoMediaClub on whether to sell, buy or hold any investments. You are advised to conduct your own research before making any investment decisions. Use provided information at your own risk.
CryptoMediaClub covers fintech, blockchain and Bitcoin bringing you the latest crypto news and analyses on the future of money.

© 2023 Crypto News. All Rights Reserved

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